YIKES - hopefully someday Heathrow becomes an airport that passengers don't want to avoid - but it sounds even worse than last summer. Although I have to admit, our experience last year was amazingly trouble free, a few annoying issues, but nothing we couldn't deal with, and from everything I had read, we were prepared for the worst.
Well at least this year we connect thru Munich and Frankfurt - done Frankfurt before and were amazed at how well it went, especially since our flight from Rome was an hour late, and we should not have made our connection but we did (well they did hold the flight since there were about 75 people) and so did our luggage, again we were amazed.